398
FNCA52 TJSJ 221930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST WED APR 22 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-230800-
SOUTHEAST COASTAL PLAINS-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 20 10
TEMP (24H TREND) 67 (-2) 88 (+2) 68 87
RH % (24H TREND) 90 (-1) 51 (-4) 89 57
WIND 20FT/EARLY(MPH) NE 8 E 9 E 8 E 8
WIND 20FT/LATE(MPH) NE 8 SE 11 NE 6 SE 9
MIXING HGT(FT-AGL/MSL) 4870 5040
TRANSPORT WND (MPH) E 6 SE 5
VENT RATE (KT-FT) 24350 20160
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-230800-
SOUTHERN HILLS-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 50 20 10
TEMP (24H TREND) 63 (-4) 84 (+3) 65 84
RH % (24H TREND) 95 (+2) 55 (-5) 96 60
WIND 20FT/EARLY(MPH) NE 9 E 6 NE 8 E 5
WIND 20FT/LATE(MPH) NE 6 SE 9 NE 5 SE 6
MIXING HGT(FT-AGL/MSL) 5940 5750
TRANSPORT WND (MPH) E 5 E 3
VENT RATE (KT-FT) 23760 17250
DISPERSION 5 5
DSI 2 6 1 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-230800-
NORTH COASTAL PLAINS-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 20 50
TEMP (24H TREND) 67 (-3) 86 (+1) 68 87
RH % (24H TREND) 95 (+1) 53 (-6) 95 56
WIND 20FT/EARLY(MPH) E 10 E 8 E 9 E 6
WIND 20FT/LATE(MPH) SE 9 NE 12 SE 8 E 10
MIXING HGT(FT-AGL/MSL) 4860 4900
TRANSPORT WND (MPH) E 7 E 6
VENT RATE (KT-FT) 29160 24500
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-230800-
NORTHERN HILLS-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 40 20 40
TEMP (24H TREND) 65 (-2) 85 (+2) 65 85
RH % (24H TREND) 96 (-2) 54 (-6) 97 59
WIND 20FT/EARLY(MPH) E 9 E 6 E 9 E 6
WIND 20FT/LATE(MPH) SE 9 NE 10 SE 6 NE 8
MIXING HGT(FT-AGL/MSL) 5830 5500
TRANSPORT WND (MPH) E 5 E 2
VENT RATE (KT-FT) 23320 11000
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-230800-
WEST COAST-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 50 30 20
TEMP (24H TREND) 66 (-3) 87 (+1) 69 87
RH % (24H TREND) 92 (-2) 53 (-5) 93 58
WIND 20FT/EARLY(MPH) NE 13 SE 8 E 11 E 5
WIND 20FT/LATE(MPH) E 12 W 6 E 10 E 6
MIXING HGT(FT-AGL/MSL) 4850 4930
TRANSPORT WND (MPH) SE 2 E 2
VENT RATE (KT-FT) 9700 9860
DISPERSION 4 4
DSI 3 5 2 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-230800-
EASTERN INTERIOR-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 40 20 30
TEMP (24H TREND) 65 (-4) 85 (+3) 66 85
RH % (24H TREND) 95 (+1) 54 (-5) 96 58
WIND 20FT/EARLY(MPH) NE 9 E 6 E 8 E 6
WIND 20FT/LATE(MPH) E 8 E 9 SE 6 E 9
MIXING HGT(FT-AGL/MSL) 6530 5960
TRANSPORT WND (MPH) E 6 E 6
VENT RATE (KT-FT) 32650 29800
DISPERSION 5 5
DSI 1 6 1 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-230800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 40 30 40
TEMP (24H TREND) 64 (-3) 81 (+4) 65 81
RH % (24H TREND) 96 (+1) 60 (-4) 96 62
WIND 20FT/EARLY(MPH) NE 6 E 5 E 6 E 5
WIND 20FT/LATE(MPH) E 5 E 8 LGT/VAR E 8
MIXING HGT(FT-AGL/MSL) 4700 4640
TRANSPORT WND (MPH) E 6 SE 7
VENT RATE (KT-FT) 23500 27840
DISPERSION 5 5
DSI 2 6 1 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-230800-
CENTRAL MOUNTAIN RANGE-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 20 10
TEMP (24H TREND) 61 (-4) 83 (+4) 62 83
RH % (24H TREND) 98 (+1) 56 (-6) 99 61
WIND 20FT/EARLY(MPH) NE 9 E 5 E 9 LGT/VAR
WIND 20FT/LATE(MPH) E 9 NE 5 E 5 LGT/VAR
MIXING HGT(FT-AGL/MSL) 6950 6220
TRANSPORT WND (MPH) NE 2 E 2
VENT RATE (KT-FT) 13900 12440
DISPERSION 5 4
DSI 2 6 1 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-230800-
CAYEY MOUNTAIN RANGE-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 30 20
TEMP (24H TREND) 63 (-3) 81 (+2) 65 80
RH % (24H TREND) 97 (+1) 59 (-3) 96 63
WIND 20FT/EARLY(MPH) NE 8 E 5 E 6 E 5
WIND 20FT/LATE(MPH) NE 5 E 8 LGT/VAR E 6
MIXING HGT(FT-AGL/MSL) 5390 5160
TRANSPORT WND (MPH) E 6 E 6
VENT RATE (KT-FT) 26950 25800
DISPERSION 5 5
DSI 1 6 1 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-230800-
VIEQUES-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER CLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 20 20
TEMP (24H TREND) 72 (-1) 85 (0) 72 85
RH % (24H TREND) 81 (-1) 52 (-2) 82 56
WIND 20FT/EARLY(MPH) NE 11 E 8 E 10 E 6
WIND 20FT/LATE(MPH) E 10 E 9 E 9 E 8
MIXING HGT(FT-AGL/MSL) 3960 3180
TRANSPORT WND (MPH) E 9 E 7
VENT RATE (KT-FT) 31680 19080
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-230800-
CULEBRA-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER CLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 20 20
TEMP (24H TREND) 73 (-2) 85 (0) 74 86
RH % (24H TREND) 79 (-1) 52 (-3) 80 55
WIND 20FT/EARLY(MPH) NE 11 E 8 E 10 E 6
WIND 20FT/LATE(MPH) E 10 E 8 E 9 E 8
MIXING HGT(FT-AGL/MSL) 3900 3140
TRANSPORT WND (MPH) E 9 E 8
VENT RATE (KT-FT) 31200 21980
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-230800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 30 20
TEMP (24H TREND) 67 (-3) 88 (+2) 69 88
RH % (24H TREND) 90 (+1) 49 (-5) 90 54
WIND 20FT/EARLY(MPH) NE 14 E 9 E 9 E 8
WIND 20FT/LATE(MPH) NE 13 SE 9 E 8 SE 9
MIXING HGT(FT-AGL/MSL) 5050 5150
TRANSPORT WND (MPH) SE 5 SE 5
VENT RATE (KT-FT) 20200 20600
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-230800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER CLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20 20
TEMP (24H TREND) 72 (-3) 85 (+1) 73 85
RH % (24H TREND) 80 (0) 51 (-4) 80 54
WIND 20FT/EARLY(MPH) NE 11 E 8 NE 10 E 6
WIND 20FT/LATE(MPH) E 11 E 8 E 9 E 9
MIXING HGT(FT-AGL/MSL) 3950 3030
TRANSPORT WND (MPH) E 10 E 8
VENT RATE (KT-FT) 35550 21210
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-230800-
ST CROIX-
330 PM AST WED APR 22 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER CLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 10 20 10
TEMP (24H TREND) 71 (-3) 86 (+1) 72 86
RH % (24H TREND) 84 (0) 54 (-3) 86 58
WIND 20FT/EARLY(MPH) NE 11 E 9 NE 10 E 9
WIND 20FT/LATE(MPH) NE 11 NE 9 E 9 E 9
MIXING HGT(FT-AGL/MSL) 4260 4480
TRANSPORT WND (MPH) E 8 E 9
VENT RATE (KT-FT) 29820 35840
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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